GPF regeneration method and device, electronic equipment and storage medium

Abstract

The invention relates to the technical field of vehicles, in particular to a GPF regeneration method and device, electronic equipment and a storage medium, and the method comprises the steps that based on the current GPF carbon loading amount, the current engine rotating speed, the current engine inflation load, the current engine cabin cover state and the current vehicle state of a target vehicle, GPF regeneration is carried out; judging whether the target vehicle meets a GPF regeneration mode entering condition or not; and if the target vehicle meets the GPF regeneration mode entering condition, the target vehicle is controlled to enter the GPF regeneration mode, the oil rail pressure of a high-pressure oil pump is adjusted to the target rail pressure, the fuel injection mode of the target vehicle is switched into a secondary injection mode, and when the GPF temperature meets the first temperature condition, the engine is controlled to postpone the ignition angle and reduce the air-fuel ratio. Therefore, according to a traditional vehicle model matched with a large-displacement engine and a hybrid vehicle model matched with a large-displacement engine, the problems that the vehicle models are low in exhaust temperature and poor in GPF regeneration capacity are solved, conditions are provided for GPF active regeneration, and the GPF regeneration efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a GPF regeneration method, device, electronic device and storage medium. Background Art

[0002] GPF particulate filter can help vehicles quickly reduce particulate pollution emissions, but installing GPF will bring many problems to users. As the amount of carbon in the GPF accumulates, the exhaust resistance will increase, fuel consumption will increase, and economy will decrease. Therefore, it is necessary to regenerate the GPF in time. In related technologies, the carbon inside the GPF is usually removed through two ways: passive regeneration and active regeneration. Among them, passive regeneration is suitable for high-speed sections. The exhaust temperature of the vehicle engine will reach more than 500 degrees. At this time, if the air-fuel ratio is lean, the excess oxygen after reacting with the oil and gas will react with the carbon captured in the GPF to oxidize, thereby reducing the amount of carbon in the GPF; active regeneration is based on the design of different manufacturers. Generally, when the blockage degree of carbon particles accumulated in the GPF reaches more than 45%, active regeneration will be activated, and the exhaust temperature will be increased by delaying the ignition angle, and the air-fuel ratio will be controlled to reduce the excess air, so as to achieve rapid elimination of carbon in the GPF.

[0003] WLTC and RDE tests are conducted on models equipped with V8TD engines. Due to the relatively low charging load during engine operation, the temperature at the GPF is mainly distributed between 350℃ and 650℃, with a large proportion below 550℃ and a relatively small proportion between 550℃ and 650℃. Therefore, for most users' daily driving, it is difficult for the GPF to enter active regeneration and passive regeneration. Even if it enters the 500℃ to 650℃ operating condition, the regeneration speed is very slow. The vehicle is at risk of GPF blockage and frequent parking regeneration in 4S shops. The above problems will be more serious in the north in winter.

[0004] Therefore, for vehicles equipped with large-displacement (3L, 4L) engines, especially hybrid systems equipped with electric motors, the passive regeneration and active regeneration conditions in related technologies will be difficult to enter due to the low exhaust temperature caused by the low engine operating load, and the regeneration needs of the vehicle's GPF cannot be met, causing the carbon content in the GPF to frequently reach the limit set by the manufacturer. The vehicle will frequently enter the maintenance station for parking regeneration, reducing user experience and increasing unnecessary manpower and material costs, which needs to be urgently resolved. Summary of the invention

[0005] The present application provides a GPF regeneration method, device, electronic device and storage medium, which are aimed at traditional vehicles with large-displacement engines and hybrid vehicles with large-displacement engines, solve the problems of low exhaust temperature and poor GPF regeneration ability of such vehicles, greatly increase the engine operating condition range in which such vehicles can enter GPF active regeneration, improve GPF regeneration efficiency, and enhance user experience.

[0006] The first aspect of the present application provides a GPF regeneration method, comprising the following steps:

[0007] Obtain the current GPF carbon load, current engine speed, current engine charging load, current engine hood status and current vehicle status of the target vehicle;

[0008] Based on the current GPF carbon load, the current engine speed, the current engine charging load, the current engine bonnet state and the current vehicle state, determining whether the target vehicle meets the GPF regeneration mode entry condition;

[0009] If the target vehicle meets the GPF regeneration mode entry condition, the target vehicle is controlled to enter the GPF regeneration mode, and the oil rail pressure of the high-pressure oil pump is adjusted to the target rail pressure, and the fuel injection mode of the target vehicle is switched to the secondary injection mode, and when the temperature of the GPF meets the first temperature condition, the engine is controlled to retard the ignition angle and reduce the air-fuel ratio.

[0010] Optionally, in some embodiments, after controlling the target vehicle to enter the GPF regeneration mode, the method further includes:

[0011] Determining whether the target vehicle meets the GPF regeneration mode exit condition;

[0012] If the target vehicle meets the GPF regeneration mode exit condition, the vehicle is controlled to exit the GPF regeneration mode.

[0013] Optionally, in some embodiments, the GPF regeneration mode exit condition is:

[0014] The carbon content of the GPF after regeneration is lower than the preset carbon content limit;

[0015] Alternatively, the front end temperature of the GPF is higher than a first temperature threshold;

[0016] Alternatively, the rear end temperature of the GPF is higher than the second temperature threshold.

[0017] Optionally, in some embodiments, after controlling the target vehicle to enter the GPF regeneration mode, the method further includes:

[0018] Acquire the vehicle speed of the target vehicle after being in the GPF regeneration mode;

[0019] If the speed of the target vehicle after being in the GPF regeneration mode is lower than a first speed threshold, control the target vehicle to interrupt GPF regeneration, and obtain a duration during which the speed of the target vehicle after being in the GPF regeneration mode is lower than the first speed threshold;

[0020] If the duration is less than a preset duration, the target vehicle is controlled to re-enter the GPF regeneration mode; otherwise, the target vehicle is controlled to exit the GPF regeneration mode.

[0021] Optionally, in some embodiments, switching the fuel injection mode of the target vehicle to the secondary injection mode includes:

[0022] The injection angles of the two fuel injections are determined, and the fuel injection is performed respectively according to the injection angles of the two fuel injections.

[0023] Optionally, in some embodiments, after obtaining the current GPF carbon load of the target vehicle, the method further includes:

[0024] If the current GPF carbon loading is higher than the preset renewable limit, a maintenance reminder instruction is generated, and a maintenance reminder is performed based on the maintenance reminder instruction.

[0025] A second aspect of the present application provides a GPF regeneration device, comprising:

[0026] An acquisition module is used to acquire the current GPF carbon load, the current engine speed, the current engine charging load, the current engine hood status and the current vehicle status of the target vehicle;

[0027] A judgment module, configured to judge whether the target vehicle meets a GPF regeneration mode entry condition based on the current GPF carbon load, the current engine speed, the current engine charging load, the current engine bonnet state, and the current vehicle state;

[0028] The control module is used for controlling the target vehicle to enter the GPF regeneration mode when the target vehicle meets the GPF regeneration mode entry condition, adjusting the oil rail pressure of the high-pressure oil pump to the target rail pressure, switching the fuel injection mode of the target vehicle to the secondary injection mode, and controlling the engine to delay the ignition angle and reduce the air-fuel ratio when the temperature of the GPF meets the first temperature condition.

[0029] Optionally, in some embodiments, after controlling the target vehicle to enter the GPF regeneration mode, the control module further includes:

[0030] A judging unit, used to judge whether the target vehicle meets the GPF regeneration mode exit condition;

[0031] The first control unit is used to control the vehicle to exit the GPF regeneration mode when the target vehicle meets the GPF regeneration mode exit condition.

[0032] Optionally, in some embodiments, the GPF regeneration mode exit condition is:

[0033] The carbon content of the GPF after regeneration is lower than the preset carbon content limit;

[0034] Alternatively, the front end temperature of the GPF is higher than a first temperature threshold;

[0035] Alternatively, the rear end temperature of the GPF is higher than the second temperature threshold.

[0036] Optionally, in some embodiments, after controlling the target vehicle to enter the GPF regeneration mode, the control module further includes:

[0037] The acquisition unit is used to acquire the vehicle speed of the target vehicle after it is in the GPF regeneration mode.

[0038] The second control unit is used to control the target vehicle to interrupt GPF regeneration when the speed of the target vehicle after being in the GPF regeneration mode is lower than a first speed threshold, and obtain the duration of time that the speed of the target vehicle after being in the GPF regeneration mode is lower than the first speed threshold.

[0039] The third control unit is used to control the target vehicle to re-enter the GPF regeneration mode when the duration is less than a preset duration, and otherwise, control the target vehicle to exit the GPF regeneration mode.

[0040] Optionally, in some embodiments, the control module includes:

[0041] The determination module is used to determine the injection angles of the two fuel injections and perform fuel injection according to the injection angles of the two fuel injections respectively.

[0042] Optionally, in some embodiments, after obtaining the current GPF carbon loading of the target vehicle, the obtaining module further includes:

[0043] The reminder unit is used to generate a maintenance reminder instruction when the current GPF carbon load is higher than a preset renewable limit value, and to make a maintenance reminder based on the maintenance reminder instruction.

[0044] A third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the GPF regeneration method as described in the above embodiment.

[0045] The fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the GPF regeneration method as described in the above embodiment.

[0046] Therefore, by obtaining the current GPF carbon load, current engine speed, current engine charging load, current engine hood state and current vehicle state of the target vehicle, and based on the current GPF carbon load, current engine speed, current engine charging load, current engine hood state and current vehicle state, it is determined whether the target vehicle meets the GPF regeneration mode entry conditions. If the target vehicle meets the GPF regeneration mode entry conditions, the target vehicle is controlled to enter the GPF regeneration mode, and the oil rail pressure of the high-pressure oil pump is adjusted to the target rail pressure, and the fuel injection mode of the target vehicle is switched to the secondary injection mode, and when the temperature of the GPF meets the first temperature condition, the engine is controlled to delay the ignition angle and reduce the air-fuel ratio. Therefore, for traditional models with large-displacement engines and hybrid models with large-displacement engines, the problems of low exhaust temperature and poor GPF regeneration ability of such models are solved, and the engine operating condition range in which such vehicles can enter GPF active regeneration is greatly increased, the GPF regeneration efficiency is improved, and the user experience is improved.

[0047] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0049] Figure 1 A flow chart of a GPF regeneration method provided according to an embodiment of the present application;

[0050] Figure 2 A schematic diagram of the principle of a GPF regeneration method provided according to an embodiment of the present application;

[0051] Figure 3 A schematic diagram of a fuel rail and a fuel injection system with variable rail pressure provided according to an embodiment of the present application;

[0052] Figure 4 A block diagram of a GPF regeneration device provided according to an embodiment of the present application;

[0053] Figure 5 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0054] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0055] The following describes the GPF regeneration method, device, electronic device and storage medium of the embodiments of the present application with reference to the accompanying drawings.

[0056] Before introducing the GPF regeneration method of the embodiment of the present application, the following GPF regeneration problem of a vehicle equipped with a large-displacement engine is first introduced.

[0057] With the tightening of vehicle emission regulations, all transmission gasoline vehicles and most hybrid vehicles need to be equipped with GPF systems. For engines with large displacement (such as 3L, 4L, etc.) and non-tightly coupled exhaust system solutions for catalysts and GPFs, the exhaust system temperature is significantly low, making it impossible to effectively regenerate GPF. This is a problem that vehicle manufacturers have always faced.

[0058] Currently, active regeneration increases the exhaust temperature by delaying the ignition angle, controls the air-fuel ratio to reduce the amount of excess air, and thus achieves rapid elimination of carbon in the GPF. However, for vehicle users with large-displacement engines (such as 3L, 4L, etc.), the relative charging load of the engine is too small under normal operating conditions. Limited by the influence of combustion stability, in most cases, the GPF temperature cannot be increased to the regeneration temperature by delaying the ignition angle. Even in the case of a pushable ignition angle, a significant delay in the ignition angle will seriously affect the vehicle's power, and may even result in no torque reserve, resulting in insufficient power during acceleration, reducing the user experience.

[0059] In view of the above problems, the embodiment of the present application obtains the current GPF carbon load, current engine speed, current engine charging load, current engine hood state and current vehicle state of the target vehicle, and judges whether the target vehicle meets the GPF regeneration mode entry conditions based on the current GPF carbon load, current engine speed, current engine charging load, current engine hood state and current vehicle state. If the target vehicle meets the GPF regeneration mode entry conditions, the target vehicle is controlled to enter the GPF regeneration mode, and the oil rail pressure of the high-pressure oil pump is adjusted to the target rail pressure, and the fuel injection mode of the target vehicle is switched to the secondary injection mode, and when the temperature of the GPF meets the first temperature condition, the engine is controlled to delay the ignition angle and reduce the air-fuel ratio. Therefore, for traditional models matching large-displacement engines and hybrid models matching large-displacement engines, the problems of low exhaust temperature and poor GPF regeneration ability of such models are solved, and the engine operating condition range in which such vehicles can enter GPF active regeneration is greatly increased, the GPF regeneration efficiency is improved, and the user experience is improved.

[0060] Specifically, Figure 1 FIG. is a schematic flow chart of a GPF regeneration method provided by an embodiment of the present application.

[0061] As Figure 1 shown, the GPF regeneration method includes the following steps:

[0062] In step S101, the current GPF carbon loading, current engine speed, current engine charging load, current engine hood status, and current vehicle status of the target vehicle are obtained.

[0063] Specifically, the embodiment of the present application obtains the current GPF carbon loading, current engine speed, current engine charging load, current engine hood status, and current vehicle status to determine whether the target vehicle meets the GPF regeneration mode entry conditions based on the current GPF carbon loading, current engine speed, current engine charging load, current engine hood status, and current vehicle status.

[0064] In step S102, based on the current GPF carbon loading, current engine speed, current engine charging load, current engine hood status, and current vehicle status, it is determined whether the target vehicle meets the GPF regeneration mode entry conditions.

[0065] Specifically, as Figure 2 shown, for the target vehicle to enter the GPF regeneration mode, the following conditions need to be met:

[0066] 1. The current GPF carbon loading of the target vehicle is greater than the regeneration limit value A2 and less than the 4S shop service regeneration carbon amount limit value A3, that is, (limitA2 < GPFMsoot < limitA3).

[0067] 2. The vehicle operating conditions meet the low rail pressure active regeneration conditions, specifically including that the current engine speed is within a preset speed range, that is, (N_limit_min < EngineSpeed < N_limit_max), and the current engine charging load is within a preset engine charging load range, that is, (rl_limit_min < engine charging load < rl_limit_max), where the preset speed range and the preset engine charging load range.

[0068] 3. The current engine hood status is in the closed state, that is, (EngineHoodSt = Close).

[0069] 4. The current vehicle status is a fault-free state.

[0070] In step S103, if the target vehicle meets the GPF regeneration mode entry condition, the target vehicle is controlled to enter the GPF regeneration mode, and the oil rail pressure of the high-pressure oil pump is adjusted to the target rail pressure, and the fuel injection mode of the target vehicle is switched to the secondary injection mode, and when the temperature of the GPF meets the first temperature condition, the engine is controlled to retard the ignition angle and reduce the air-fuel ratio.

[0071] Further, in some embodiments, switching the fuel injection mode of the target vehicle to the two-injection mode includes: determining injection angles of two fuel injections, and performing fuel injection according to the injection angles of the two fuel injections respectively.

[0072] Specifically, when the target vehicle meets all the conditions in step S102, the engine control unit (EMS) controls the high-pressure oil pump to adjust the oil rail pressure to the target rail pressure, wherein the target rail pressure is determined based on the current engine speed and charging load according to the control parameters preset during the development process; after the rail pressure reaches the target rail pressure, the engine control unit (EMS) controls the fuel injection mode to switch to the two-time injection mode, and determines the angles of the two fuel injections under the current working conditions according to the preset control parameters. It should be noted that the second fuel injection adopts a late injection strategy; when the GPF temperature reaches the regeneration strategy target requirement, the engine control unit (EMS) control system further delays the ignition angle and reduces the air-fuel ratio to achieve GPF regeneration.

[0073] Optionally, in some embodiments, after controlling the target vehicle to enter the GPF regeneration mode, it also includes: determining whether the target vehicle meets the GPF regeneration mode exit condition; if the target vehicle meets the GPF regeneration mode exit condition, controlling the vehicle to exit the GPF regeneration mode.

[0074] Further, in some embodiments, the exit condition of the GPF regeneration mode is: the carbon loading of the GPF after regeneration is lower than a preset carbon limit; or, the front end temperature of the GPF is higher than a first temperature threshold; or, the rear end temperature of the GPF is higher than a second temperature threshold.

[0075] Among them, the front temperature of GPF can be calculated by Figure 3 The temperature of the rear end of the GPF can be obtained by the GPF front end high temperature sensor 7 shown, and the temperature of the rear end of the GPF can be obtained by the GPF rear end high temperature sensor 8. The preset carbon limit value, the first temperature threshold value, and the second temperature threshold value can be pre-set by the user, can be obtained through a limited number of experiments, or can be obtained through a limited number of computer simulations. No specific limitation is made here. Preferably, the preset carbon limit value is 0.6g.

[0076] Specifically, when the target vehicle is in the regeneration flag set (GPFburnst=1), the engine control unit (EMS) will calculate the carbon particle regeneration rate based on the GPF model, and update the carbon amount in the GPF in real time. When the model carbon amount in the GPF reaches 0.6g, the engine control unit (EMS) will coordinate the relevant control modules to exit the active regeneration state (GPFburnst=0).

[0077] During regeneration, the front and rear high temperature sensors on the GPF monitor the current temperature of the GPF in real time. When the temperature is higher than the two temperature thresholds, the engine control unit (EMS) will coordinate the relevant control modules to exit the active regeneration state (GPFburnst=0)

[0078] Optionally, in some embodiments, after controlling the target vehicle to enter the GPF regeneration mode, it also includes: obtaining the vehicle speed of the target vehicle after being in the GPF regeneration mode; if the vehicle speed of the target vehicle after being in the GPF regeneration mode is lower than a first vehicle speed threshold, controlling the target vehicle to interrupt GPF regeneration, and obtaining the duration of the target vehicle speed being lower than the first vehicle speed threshold after being in the GPF regeneration mode; if the duration is less than a preset duration, controlling the target vehicle to re-enter the GPF regeneration mode, otherwise, controlling the target vehicle to exit the GPF regeneration mode.

[0079] Among them, the first vehicle speed threshold and the preset time length can be pre-set by the user, can be obtained through a limited number of experiments, or can be obtained through a limited number of computer simulations, and are not specifically limited here. Preferably, the first vehicle speed threshold is 20km / h.

[0080] Specifically, if the target vehicle enters the GPF regeneration mode and the speed is lower than 20 km / h, the engine control unit (EMS) will interrupt the GPF active regeneration (GPFburnst=3), and will restart the regeneration after the vehicle speed is restored. Otherwise, the regeneration will be completely exited to avoid the potential risk of the user suddenly stopping the car, poor cooling, and continued carbon burning of the GPF.

[0081] Therefore, the embodiment of the present application has no adverse impact on the user's driving experience, can reduce the regeneration limit, achieve a long-term low-carbon level of the GPF, reduce exhaust resistance, and improve the vehicle's economy and power.

[0082] Optionally, in some embodiments, after obtaining the current GPF carbon loading of the target vehicle, it also includes: if the current GPF carbon loading is higher than a preset renewable limit, generating a maintenance reminder instruction, and performing a maintenance reminder based on the maintenance reminder instruction.

[0083] Specifically, under special circumstances (such as vehicle failure, or low speed over short distances, etc.), the carbon amount in the GPF is greater than the 4S shop service regeneration carbon amount limit (GPFMsoot>limitA3), and a maintenance reminder instruction can be generated. Based on the maintenance reminder instruction, the user is prompted to go to the 4S shop for repairs. The vehicle can use the GPF regeneration method provided in the embodiment of the present application to regenerate the GPF in the 4S shop, thereby improving regeneration efficiency, shortening regeneration time, and improving user experience.

[0084] In summary, the embodiments of the present application use a fuel rail with variable rail pressure and a fuel injection system, such as Figure 3 As shown, it includes: a gasoline tank 1, a low-pressure fuel pipeline and an oil-gas separation device assembly 2, an oil rail and an injector assembly 3, an engine 4, an exhaust system 5, a three-way catalytic converter 6, a GPF front-end high-temperature sensor 7, a GPF rear-end high-temperature sensor 8, a GPF 9 and an engine control unit (EMS) 10. The vehicle performance calibration development under different rail pressures is completed in the development of engines and complete vehicle products. When the carbon content of the vehicle GPF is higher than the preset limit and the conventional active regeneration conditions are still not met, the engine oil rail pressure is reduced to the target value, and the injection time is increased, thereby solving the problem that the injection time is short and the second injection cannot be achieved under the original rail pressure. At the same time, the fuel two-time injection mode is switched, and a later second injection strategy is adopted, so that more heat enters the exhaust system, thereby achieving the effect of increasing the GPF temperature, which greatly increases the engine operating range that can enter the GPF active regeneration. At the same time, due to the increase in temperature, the carbon burning rate is increased, thereby greatly shortening the regeneration time, greatly improving the user experience, and avoiding more than 75% of the GPF carbon content over-limit failure.

[0085] According to the GPF regeneration method proposed in the embodiment of the present application, by obtaining the current GPF carbon load, current engine speed, current engine charging load, current engine hood state and current vehicle state of the target vehicle, and based on the current GPF carbon load, current engine speed, current engine charging load, current engine hood state and current vehicle state, it is determined whether the target vehicle meets the GPF regeneration mode entry conditions. If the target vehicle meets the GPF regeneration mode entry conditions, the target vehicle is controlled to enter the GPF regeneration mode, and the oil rail pressure of the high-pressure oil pump is adjusted to the target rail pressure, and the fuel injection mode of the target vehicle is switched to the secondary injection mode, and when the temperature of the GPF meets the first temperature condition, the engine is controlled to delay the ignition angle and reduce the air-fuel ratio. Therefore, for traditional models matching large-displacement engines and hybrid models matching large-displacement engines, the problems of low exhaust temperature and poor GPF regeneration ability of such models are solved, and the engine operating condition range in which such vehicles can enter GPF active regeneration is greatly increased, the GPF regeneration efficiency is improved, and the user experience is improved.

[0086] Next, the GPF regeneration device proposed according to the embodiment of the present application is described with reference to the accompanying drawings.

[0087] Figure 4 It is a block diagram of a GPF regeneration device according to an embodiment of the present application.

[0088] like Figure 4 As shown, the GPF regeneration device 10 includes: an acquisition module 100 , a determination module 200 and a control module 300 .

[0089] Among them, the acquisition module 100 is used to obtain the current GPF carbon loading, the current engine speed, the current engine charging load, the current engine hood status and the current vehicle status of the target vehicle.

[0090] The judgment module 200 is used to judge whether the target vehicle meets the GPF regeneration mode entry conditions based on the current GPF carbon load, the current engine speed, the current engine charging load, the current engine hood state and the current vehicle state.

[0091] The control module 300 is used to control the target vehicle to enter the GPF regeneration mode when the target vehicle meets the GPF regeneration mode entry condition, adjust the oil rail pressure of the high-pressure oil pump to the target rail pressure, switch the fuel injection mode of the target vehicle to the secondary injection mode, and control the engine to delay the ignition angle and reduce the air-fuel ratio when the temperature of the GPF meets the first temperature condition.

[0092] Optionally, in some embodiments, after controlling the target vehicle to enter the GPF regeneration mode, the control module 300 further includes: a judgment unit and a first control unit.

[0093] The judgment unit is used to judge whether the target vehicle meets the GPF regeneration mode exit condition.

[0094] The first control unit is used to control the vehicle to exit the GPF regeneration mode when the target vehicle meets the GPF regeneration mode exit condition.

[0095] Optionally, in some embodiments, the exit condition of the GPF regeneration mode is: the carbon loading of the GPF after regeneration is lower than a preset carbon limit; or, the front end temperature of the GPF is higher than a first temperature threshold; or, the rear end temperature of the GPF is higher than a second temperature threshold.

[0096] Optionally, in some embodiments, after controlling the target vehicle to enter the GPF regeneration mode, the control module 300 further includes: an acquisition unit, a second control unit and a third control unit.

[0097] The acquisition unit is used to acquire the vehicle speed of the target vehicle after it is in the GPF regeneration mode.

[0098] The second control unit is used to control the target vehicle to interrupt GPF regeneration when the speed of the target vehicle after being in the GPF regeneration mode is lower than the first speed threshold, and obtain the duration of the target vehicle's speed being lower than the first speed threshold after being in the GPF regeneration mode.

[0099] The third control unit is used to control the target vehicle to re-enter the GPF regeneration mode when the duration is less than a preset duration, otherwise, control the target vehicle to exit the GPF regeneration mode.

[0100] Optionally, in some embodiments, the control module 300 includes: a determination module.

[0101] The determination module is used to determine the injection angles of the two fuel injections and perform fuel injection according to the injection angles of the two fuel injections respectively.

[0102] Optionally, in some embodiments, after obtaining the current GPF carbon loading of the target vehicle, the obtaining module 100 further includes: a reminder unit.

[0103] Among them, the reminder unit is used to generate a maintenance reminder instruction when the current GPF carbon load is higher than the preset renewable limit, and to make a maintenance reminder based on the maintenance reminder instruction.

[0104] It should be noted that the above explanation of the GPF regeneration method embodiment is also applicable to the GPF regeneration device of this embodiment and will not be repeated here.

[0105] According to the GPF regeneration device proposed in the embodiment of the present application, by obtaining the current GPF carbon load, current engine speed, current engine charging load, current engine hood state and current vehicle state of the target vehicle, and based on the current GPF carbon load, current engine speed, current engine charging load, current engine hood state and current vehicle state, it is determined whether the target vehicle meets the GPF regeneration mode entry conditions. If the target vehicle meets the GPF regeneration mode entry conditions, the target vehicle is controlled to enter the GPF regeneration mode, and the oil rail pressure of the high-pressure oil pump is adjusted to the target rail pressure, and the fuel injection mode of the target vehicle is switched to the secondary injection mode, and when the temperature of the GPF meets the first temperature condition, the engine is controlled to delay the ignition angle and reduce the air-fuel ratio. Therefore, for traditional models matching large-displacement engines and hybrid models matching large-displacement engines, the problems of low exhaust temperature and poor GPF regeneration ability of such models are solved, and the engine operating condition range in which such vehicles can enter GPF active regeneration is greatly increased, the GPF regeneration efficiency is improved, and the user experience is improved.

[0106] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0107] A memory 501 , a processor 502 , and a computer program stored in the memory 501 and executable on the processor 502 .

[0108] When the processor 502 executes the program, the GPF regeneration method provided in the above embodiment is implemented.

[0109] Furthermore, the electronic device further comprises:

[0110] The communication interface 503 is used for communication between the memory 501 and the processor 502 .

[0111] The memory 501 is used to store computer programs that can be executed on the processor 502 .

[0112] The memory 501 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0113] If the memory 501, the processor 502 and the communication interface 503 are implemented independently, the communication interface 503, the memory 501 and the processor 502 can be connected to each other through a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0114] Optionally, in a specific implementation, if the memory 501, the processor 502 and the communication interface 503 are integrated on a chip, the memory 501, the processor 502 and the communication interface 503 can communicate with each other through an internal interface.

[0115] The processor 502 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0116] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, which implements the above GPF regeneration method when executed by a processor.

[0117] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0118] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0119] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0120] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0121] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0122] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A GPF regeneration method, characterized in that: The following steps are involved: Obtain the current GPF carbon load, current engine speed, current engine charging load, current engine hood status and current vehicle status of the target vehicle; Based on the current GPF carbon load, the current engine speed, the current engine charging load, the current engine bonnet state and the current vehicle state, determining whether the target vehicle meets the GPF regeneration mode entry condition; If the target vehicle meets the GPF regeneration mode entry condition, the target vehicle is controlled to enter the GPF regeneration mode, and the oil rail pressure of the high-pressure oil pump is adjusted to the target rail pressure, and the fuel injection mode of the target vehicle is switched to the secondary injection mode, and when the temperature of the GPF meets the first temperature condition, the engine is controlled to retard the ignition angle and reduce the air-fuel ratio.

2. The method according to claim 1, characterized in that After controlling the target vehicle to enter the GPF regeneration mode, the method further includes: Determining whether the target vehicle meets the GPF regeneration mode exit condition; If the target vehicle meets the GPF regeneration mode exit condition, the vehicle is controlled to exit the GPF regeneration mode.

3. The method according to claim 2, characterized in that The GPF regeneration mode exit condition is: The carbon content of the GPF after regeneration is lower than the preset carbon content limit; Alternatively, the front end temperature of the GPF is higher than a first temperature threshold; Alternatively, the rear end temperature of the GPF is higher than the second temperature threshold.

4. The method according to claim 1, characterized in that: After controlling the target vehicle to enter the GPF regeneration mode, the method further includes: Acquire the vehicle speed of the target vehicle after being in the GPF regeneration mode; If the speed of the target vehicle after being in the GPF regeneration mode is lower than a first speed threshold, control the target vehicle to interrupt GPF regeneration, and obtain a duration during which the speed of the target vehicle after being in the GPF regeneration mode is lower than the first speed threshold; If the duration is less than a preset duration, the target vehicle is controlled to re-enter the GPF regeneration mode; otherwise, the target vehicle is controlled to exit the GPF regeneration mode.

5. The method according to claim 1, characterized in that The step of switching the fuel injection mode of the target vehicle to the secondary injection mode comprises: The injection angles of the two fuel injections are determined, and the fuel injection is performed respectively according to the injection angles of the two fuel injections.

6. The method according to claim 1, characterized in that After obtaining the current GPF carbon load of the target vehicle, the method further includes: If the current GPF carbon loading is higher than the preset renewable limit, a maintenance reminder instruction is generated, and a maintenance reminder is performed based on the maintenance reminder instruction.

7. A GPF regeneration device, characterized in that: include: An acquisition module is used to acquire the current GPF carbon load, the current engine speed, the current engine charging load, the current engine hood status and the current vehicle status of the target vehicle; A judgment module, configured to judge whether the target vehicle meets a GPF regeneration mode entry condition based on the current GPF carbon load, the current engine speed, the current engine charging load, the current engine bonnet state, and the current vehicle state; The control module is used for controlling the target vehicle to enter the GPF regeneration mode when the target vehicle meets the GPF regeneration mode entry condition, adjusting the oil rail pressure of the high-pressure oil pump to the target rail pressure, switching the fuel injection mode of the target vehicle to the secondary injection mode, and controlling the engine to delay the ignition angle and reduce the air-fuel ratio when the temperature of the GPF meets the first temperature condition.

8. The device according to claim 7, characterized in that After controlling the target vehicle to enter the GPF regeneration mode, the control module further includes: A judging unit, used to judge whether the target vehicle meets the GPF regeneration mode exit condition; A control unit is used to control the vehicle to exit the GPF regeneration mode when the target vehicle meets the GPF regeneration mode exit condition.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the GPF regeneration method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the GPF regeneration method as described in any one of claims 1 to 6.

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